Burglar-alarm.



I 9 FILE:

G.J.DEFPNER. BURGLAR ALARM. APPLICATION FILED JULY B',190 8.

F T T w WITNESSES ATTORNEYS.

Patented Aug. 17, 1909.

GEORGE J. DEFFNER, OF WEST SPRINGFIELD, MASSACHUSETTS.

BURGL'AR-ALARM.

Specification of Letters Patent;

Application filed July 8, 1908.

Patented Aug. 17, 1909. Serial No. 442,486.

To all whom it may concern:

Be it known that I, GEORGE J. DEFFNER, a citizen of the United States ofAmerica, residing at West Springfield, in the county of Hampden andState of Massachusetts, have invented a new and useful Burglar- -Alarm,of which the following is a specification.

My invention relates to improvements in mechanical alarm devices forwindows, in which I employ certain peculiar mechanism adapted to belocated within a window casing and having members outside of such.casing by means of which the device is op-- erated when one of thewindows is opened, also mechanism operative from the outside forpreventing the sounding of the alar'm when the window to which saidalarm is subject is opened, all as hereinafter set forth.

The objects of my invention are, first, to provide a burglar alarm themajor portion of which can be concealed in a window casing, such alarmbeing so constructed and arranged that. it is caused to ringautomatically as soon as the window which controls it is opened, and tocontinue to ring until such window is closed or the alarm runs down;second, to produce an alarm of this kind which can be made subject toeither the upper or lower window; third, to furnish convenient means forcutting out the alarm when occasion requires, and, fourth, to provide analarm which is comparatively simple and inexpensive yet practicable andeflicient, compact, and requires but slight movement of parts to operateit. I attain these objects by the means illustrated in the accompanyingdrawings, in which- Figure 1 is an elevation of a portion of one of thejambs of a window-frame, showing the exposed parts of my device; Fig. 2,an inside elevation of a portion of a window casing of which theaforesaid frame forms a part, showing certain features. of theinvention; Fig. 3, a back view of the mechanism within said casing, oneside of the latter being in section, and Fig. l, a side view of saidmechanism taken approximately on lines l l, looking in the direction ofthe arrow, F 1, a substantial fragment of a window, a portion of thesiderail of the sash of which is broken away, being shown in positionrelative to the janib and to the mechanism.

Similar figures refer to similar parts throughout the several views.

Although my invention may be employed in connection with an electricpush-button, I prefer to use it in connection with an ordinarypush-pin-operated bell placed with the major portion of the rest of themechanism in a window-casing, so as to dispense with wires, batteries,and other more or less complicated and expensive apparatus. The use of abell of this kind insures positive and unfailing service, and enables meto arrange my whole device compactly in an out of the way place.

The type of hell which I make use of is the well-known type that has aspring adapted to be wound up and locked against action, an actuatingmember to release such spring, and a knocker operated by said springwhen the latter is released by said actuating member to sound the belland to continue sounding it as long as such actuating member isdisplaced, the stored energy of the spring being available in this wayuntil the spring runs down. Asit is simply required for the purposes ofthis invention that the hell he provided with an actuating member, and,incidentally, with winning means when nec-- essary, i have omitted allillustration of the interior mechanism of the bell.

It is to be fully understood that any suitable sound-proclucing devicewhich is capable of being actuated to give an alarm upon depressing apin, button, or the like, may be employed with this invention.

In the drawings a portion of the jamb of a window-frame which alsoconstitutes one side of a window casing is represented at 1, and anotherside of such casing at 2. Vertical grooves 33 in the jainb 1 are for theupper and lower windows, a portion of the lower window appearing at 5 inthe last view. It is the left-hand side rail 6 of the sash of thiswindow that operates the alarm, as will be explained presently. One ormore openings or holes may be made in the casing to permit the soundemanating from the alarm when rung to escape freely into the room, threesuch holes being shown at 7 in the side 2, Fig. 2. An opening 8 is madein the j amb 1, through the bottom of the groove 8 for the window 5, foran actuating pin 9, and the bottom of said groove is channeled at 10 fora bow-spring 11. The base of the bowspring 11 is secured by a screw 12to the jauib, and the upper terminal of said spring bears against andcan slide on a plate 13 let into the bottom of the aforesaid grooveinside of the bottom of the channel 10. 1' key-hole 14: is made in thebead between the grooves 3.

1n the edge of the sash rail (3 which is adjacent to the jamb 1, nearthe upper end, is a concave recess 15 to receive the bowspring withoutcompressing the same when the window 5 is closed, as shown in Fig. l;Let into the side 2 over an opening 16 therein is a perforated plate 17for a draw-pin 18 notched at 19 to interlock with said plate when thepin is drawn outvvard.

Having described the parts of the window, including the frame andeasing, with which my invention is most intimately associated and whichin some measure enter into said invention, together with such of themem-- bers of the new mechanism as are exposed to view, I will nextproceed to describe the major portion of such mechanism, which iscontained within the casing.

A bell 20, provided with a push-pin 21 at the top and with a windingstem 22 on the front at the center which projects into the key-hole 14;,is secured in position by means of a bracket 23 having one end fastenedto sa d bell and the other end to the inner side of the jamb 3. Pivotedat 2st to a block 25 fixed against the jamb is a horizontal lever 26which extends over the push-pin 21. This lever is perforated at theends, the perforation in the end nearer the side 2 receiving the upperterminal of a vertical rod 27, and the perforation in the opposite endbeing for a purpose yet to be explained. The rod 27 has a shoulder 28upon which the lever 26 normally bears or which normally is forcedagainst said lever through the medium of a spring 29 encircling said rodbetween the lever and a washer 30 and nut 31 on the upper screw-threadedend of the rod. The base of the rod 27 is pivoted at 32 to one end of abell-crankdever 33, and the pin 9 is pivoted at 3 1 to the other end ofsaid lever. The bell-crank-lever is pivoted at 35 to a standard 36securely fastened to the jamb.

Under normal conditions the spring 29 and the push-pin 21 keep the rod27 and the connected terminal of the lever 26 elevated so that the bell20 does not ring, and when said rod is thus disposed thebell-crank-lever 33 retains the pin 9 in its outward position with thefront end in the recess 15, clearly appears in Fig. 4; but if the window5 be raised said bell instantly will begin to ring and will continue toring until said window is again closed or until the bell runs down,owing to the compression of the spring 11, the consequent inwardmovement of the pin 9, the rocking of said bell-crank-lever by said pin,the drawing down of said rod by said lever, and the downward tilting ofthat portion of said lever 26 which bears on said push-pin, the leverbeing the direct agent by means of which the push-pin is thrust downward into the bell to cause the same to sound. As soon as the window 5is closed the spring 11 expands into the recess 15 and allows the pin 9to move outward and the bell-crank-lever, rod 27 and lever 26 to resumetheir former positions under the influence of the spring 29 and thepush-pin 21. The pusl1pin 21 being thus released springs upward and theringing ceases. It will be understood, of course, that the spring 11when flattened by the side rail 6 is received into the channel 10, so asnot to interfere with the raising of the window.

Connected by a link 37 with the inner end of the draw-pin 18 is a dog 38pivoted at 39 to the jamb 1 on the inside. This dog has a foot-piece 40which extends beneath the lever 26 between the pivot 2d and the rod 27.The office of the dog 38 is to prevent the sounding of the bell 20 whenit is desired to open the window from the inside, it then being simplynecessary to draw out the pin 18 and engage its notched part 19 with theplate 17, which operation tilts said dog through the medium of theconnecting link 37 and thrusts the foot-piece 40 against the undersideof the lever 26. With the parts disposed as just explained it will beseen that the lever 26 will be held up by the footpiece 40 when the rod27 is depressed, and so prevented from acting on the push-pin 21, thespring 29 permitting said rod to move down without the lever and theshoulder 28 to leave said lever. Upon releasing the draw-pin fromlocking engagement with the plate 17, the weight of the free terminal ofthe dog 38 causes such terminal to swing downward away from the lever26, and said pin to be drawn inward, (or the pin can be pushed inwardwhen unhooked and the dog thus rocked out of the way of the lever), andthe lever is left to the influence of the actuating or operatingmechanism. This disconnecting mechanism for the bell need not be used incase the bell is run down, but usually the bell will be kept wound. Akey (not shown) is employed to wind the bell, such key being introducedinto the keyhole 14: and engaged with the stem 22 for the purpose.

In order to prevent the window weights which travel up and down in thecasing from fouling the alarm mechanism, com bined guards and guides maybe provided, one between each side of the mechanism and the adjacentside of the casing. Such combined guards and guides which are suitablefor the purpose are represented by dot-anddash lines 411 and 12 in Fig.3, and in Fig. d an elevation of the member 41 is shown in full lines.The member 11 has a lateral wing 43 to cover the adjacent end of the arm26, and the member l2 has a similar wing 4A to cover the link 37 andparts of the drawpin 18 and the dog 28. The wings 43 and 44 must belarge enough to permit free movement on the part of the members coveredthereby.

Such an alarm as this is generally used in connection with a lower sash,but if it is desired to employ the same in connection with an upper sashit can easily be done by placing the bell-cra11k-lever and its standardabove the lever 26, passing the rod 2'7 through the opening, 46, in theend. of said lever 26 which is opposite that engaged by said rod whenthe mechanism is used with a lower window, and locating the spring 11 inthe groove 3 for the upper window into which groove the pin 9 will thenprotrude. The position of the disconnecting mechanism need not bechanged. The operation will be substantially the same as in the othercase. While more or less alteration in the shape of some of the partsmay be made necessary by reason of the relocation of the operatingmechanism, no such alteration will be of sucha character as to affectthe invention; moreover, it is obvious that in any event minor changesin the shape, size, and construction of some or all of the parts may bemade, in order to adapt the device to different window casings, withoutdeparting from the scope of the appended claims.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination, in a burglar alarm, with the actuating member of abell, and a pivotally mounted lever in operative relation to suchmember, of an operating member for such lever, a yielding connectionbetween said operating member and said lever, an operating member forsaid lever-operating member, and an operating pin for saidsecond-mentioned operating member.

2. The combination, in a burglar alarm, with the actuating member of abell, and a pivotally mounted lever in operative relation to suchmember, of a member yieldingly connected with such lever, means toactuate such last-mentioned member to cause it normally to rock saidlever against said actuating member for the bell, and means to preventthe lever from following the member which is yieldingly connected withthe lever.

3. The combination, in a burglar alarm, with the actuating member of abell, and a pivotally mounted lever in operative relation to suchmember, of a member yieldingly connected with such lever, means toactuate said last-mentioned member to cause it normally to rock saidlever against said actuating member for the bell, a movable dog, andmeans to retain such dog in the path of the lever to prevent the latterfrom following the member which is yieldingly con nected therewith.

4t. The combination, in a burglar alarm, with the actuating member of abell, and a pivotally mounted lever in operative relation to suchmember, of a member yieldingly connected with such lever, means toactuate said lastmentioned member to cause it normally to rock saidlever against said actuating member for the bell, a movable dog, adraw-pin connected with said dog, and a locking member for said pin whendrawn outward, the arrangement of parts being such that the lever isprevented from following the member which is yieldingly connectedtherewith when the draw-pin is out wardly disposed.

The combination, in a burglar alarm, with a window jamb, and a window,of a bell mounted on the inside of such jamb and provided with apush-pin, a lever pivotally mounted in operative relation to such pin, alongitudinally-movable operating pin eX- tending into the path of travelof such window, and connecting members between said lever and saidoperating pin to cause the lever to actuate said push-pin when the operating pin is moved inward by said window.

6. The combination, in a burglar alarm, with a window jamb, a window,and a bowspring arranged between such amb and the "indow and adapted tobe compressed by the latter when opened, of the actuating member of abell inside of said amb, a lever pivotally mounted in operative relationto s eh member, a longitudinally-movable oper ating pin having its outerend in contact with said spring, and connecting members between saidlever and said pin to cause the lever to act on said actuating memberfor the belt when the operating pin 1s moved inward by the spring whencompressed.

7. The combination, in a burglar alarm, with a window jamb having akey-hole therein, and a window, of a bell mounted on the inside of suchjamb and provided with a push-pin and with a winding stem accessiblethrough said key-hole, a lever pivotally mounted in operative relationto such pin, a longitudinally-movable operating pin extending into thepath of travel of such window and connecting members between said leverand said operating pin to cause the lever to actuate said push-pin whenthe operating pin is moved inward by said window.

8. The combination, in a burglar alarm, with a perforated window casingprovided with a perforated plate, and a window, of the actuating memberof a bell within such casing, a pivotally mounted operating lever forsuch actuating member, a member yieldingly connected with such lever,means to move said last mentioned member when said window is opened tocause said lever to act on said actuating member for the bell, a (log,and a locking member connected with such dog and extending through theperforations in said casing and plate and adapted when drawn outward andlocked to throw said dog into operative relation to said lever and toretain it in such position to hold the lever against the action of themember which is yieldingly connected therewith.

9. The combination, in a burglar alarm, with a Window casing, of a belland an operating lever therefor Within such casing, operating, mechanismand disconnecting mechanism also Within such casing for said lever, andguards at the sides of said bell and operating mechanism and coveringportions of the lever and of said disconnecting mechanism to serve asguides for Window Weights.

10. The combination, in a burglar alarm, with the actuating member of abell, and a pivotally mounted lever in operative rela-' tion to suchmember, of an operating member for such lever, the latter being adapted20 GEORGE J. DEFFNER.

lVitnesses F. A. CUTTER, J OHN H. TURCOTTE.

